His family is the same group that the FBI raided in 2003 in Falls Church, VA. I don't have the links, but I remember the raid making breaking news on FR. I'll do some searching to see if I can find some links.
I didn't find that but found this instead:
"The Falls Church, Va., offices of the World Assembly of Muslim Youth, an international charity whose regional offices are headed by AU Muslim chaplain Fadel Soliman, were raided by federal agents late last month." The Eagle - American University Press (6/21/2004)